Method of forming hinges



Oct. 26,1926. 1,604,229

H. G. KELLOGG METHOD OF FORMING HINGES Filed Nov. 13. 1922 4 Sheets-Sheet 1 Oct.) 26 192%,

H. G. KELLOGG METHOD OF FORMING HINGES Filed Nov-15, 1922 4 Sheets-Sheet 2 Jiamzr G Xe L107} Oct. 26 W26. 1,604,229

H. 3. KELLOGG METHOD OF FORMING HINGES Filed Nov. 13, 1922 4 Sheets-Sheet 5 Oct. '26 M9261.

- H. G. KELLOGG METHOD OF FORMING HINGES Filed Nqv. 13. 1922 4 SheetE-Shme'h 4 @nueufo:

A t me insane 'HOIVL'ER G". .KEIJLOGG, OF DETRUI'I', MICHIGAN, ASSIG-NOR TO MOTOR ZERODTUCTS COR- PORA'IION (1923),0133 DETROIT,Z1'ICHIGAN, A CORPORATION OF NEW YORK.

METHOD OF IEOBIINIING HINGES.

rApplication filed November The invention relates to the manufacture of hinges of that type commonly lrnown as piano hinges. The 'main idea embodied in the invention is the forming of a hinge by onecontinuous operation, increasing the rate of production and decreasing the cost of manufacture. Another feature isthesevering of an advancing flat metallic strip into a pair of logitudinal sections andthe subsequent fashioning of the sections into hinge members. In addition to these'features,the invention has further features asmore fully hereinafter set forth.

In the drawings:

Figures '1 and 2 are respectively .a side elevation anda plan view-of a machine for carrying out my method;

Figures 3, tand 5-are plan vieWs'showin-g different stages in the development of the hinge;

Figures 6, 8, 11, 12, 14 16, 17, .18 and 19 are cross sections on the lines, 6-6, 88, 1111, 12-12,14t-.14C. 16-16, 1-1-17, 18- 18 and 1919 respectively of Figure 1;

Figures .7, 9,10, .13 and 15 .are'cross .sections on the lines 7-7,.-99, '10-10, 13-13 and 1515 respectively of -Figure2.

Figure 20 is a perspective view of a portionof the formed :hinge.

In general, the hinge ofthe'type commonly known-asa piano .hingeis' formed froma flat metallic strip of indeterminate length which 'iscontinuously advanced, and during itsadvancement is severed intotwo longitudinal sections having. alternate interengaging tongues extendingilongitudinally there of and subsequently :has its sections fashioned to form hingeanemhers. More specifi cally, the tonguesnf the sections are fashioned around a wire to form :barrels, this .wire being continuously advanced with the strip.

Figures 1 and v2 disclose .a machine for carryingiout my method. .in which 1 represents a pair ofshearing;rolls,.and.2, 3, 4, 5, 6, 7 and 8 successive pairsof driven forming rolls, these forming rolls and shearing rolls all being driven in timed relation "to each 'other through the series of intermeshing gears 9 extending longitudinally of themachine. Stationarydies and-also idler forming rolls are provided intermediatedifferent pairs of the driven forming rolls for carrying out certain steps in my method.

13, 1922. Serial'No. 600,689.

, A flat metallic strip 10 shown in Figure 3 and coiled to form a reel rotatably mounted in advance of the machine is continuously advanced through the machine and the first step in the forming of the hinge comprises the shearing of the strip by the siearing rolls 1 into a pair of longitudinal sections having the bodies 11 and thealternateinterengaging tongues 12 extending longitudinally thereof as shown in Figure 4.

The sections then pass through the first pair of forming rolls 2 which crimp the tongues 12 intermediate their endsrand defleet the outerends of the tongues of one section upwardly above the plane of the body of the othersection, the sections after this step appearing asshown in Figures 5 and 6.

After the tongues of the sections have been crimped, the sections are then moved laterally toward each other to bring the tongues of one section into overlapping .re- 'lation with the body of the other section, thisbeing accomplishedby passing the sections through a die 13 intermediate the pairs of forming rolls 2 and'3 and having:a rearwardly'tapering guideway for receiving the sections and moving the same laterally toward each other, thereby bringing .the tongues of one section into overlapping-relation with the body of the other section as shown in Figures 8 and 9. However, to ,permit of more readily moving the sections laterally toward each other, theirtongues 12 are previously bent slightly upward as shown in Figure 7 :by passing the sections over a pair of balls 16 which contact with the tongues of the sections, .toslightly deflect the same upwardly and thus separate their side edges. Also. after the sectionsare latera'llymoved toward each other they are bent downwardlyas shown in Figure 10,to slightly separate the side edges of the tonguesboth steps being for the purpose of preventing any binding action 'betweenithe tongues.

The next step inthe operation of forming the hinge comprises the passing of the overlapping sections through the second pair of forming rollsB which bend the bodies 11 of the. sections upwardly relative to the tongues Since the body ofone section engages the tongues of the other section during. its upward bending movement, the tongues are also bent upwardly so that the bodies and tongues have the relative positions as shown in Figure 11. The tongues are further bent relative to their res ective bodies by passing the sections throu h the stationary die H- shown in Figures 12 and 13, which has a U-shaped recess therein with substantially parallel vertical side walls and a round lower end. The width of the recess decreases toward its rear end so that in addition to bending the sections into substantially U- shape, the sections are moved laterally toward each other to bring the tongues of one section into more of an overlapping relation relative to the bending of the other section.

The wire 15 which forms the hinge pivotand around which the tongues 12 of the sections are bent, is continuously advanced into the machine and between the tongues after the sections have assumed a substantially U- shape. This wire is advanced by the pairs of forming rolls 4, 5, 6, 7 and 8 and as a consequence, is advanced at the same speed as the strip 1. As shown in Figure 14%, the wire is fed between the tongues of the two sections and adjacent their bases. After the engagement of the wire with the sections, the tongues of the sections are then fashioned around the wire and the first step in fashioning these tongues around the wire comprises the passing of the sections with the wire through the pair of idler forming rolls 16 as shown particularly in Figure 15, these rolls having portions for engaging the bodies 11 of the sections and swinging the same downwardly with respect to each other as well as moving the same laterally toward each other whereby the tongues of the sections are moved around the wire so that they cooperate to surround the same.

The next step in the fashioning of the tongues of the sections around the wire comprises the passing of the sections with the wire through the fourh pair of forming rolls 5 which swing the bodies of the sections downwardly into the same plane and bend the ends of the tongues around the wire, the partially completed hinge now having the cross sectional appearance as shown in Figure 16. After passing through the pair of forming rolls 5, the partially fashioned sections and the wire then pass through the fifth set of forming rolls 6 which incline the bodies of the sections upwardly and more completely bend the tongues of the sections, and particularly their bases, around the wire so that their ends more nearly engage their respective bodies. The sections and wire then pass through the sixth set of forming rolls 7 which again swing the bodies of the sections downwardly into the same plane and more completely bend the tongues of the sections around the wire. Then the sections and the wire are passed through the last set of forming rolls 8 which again incline the bodies of the sections upwardly and complete the bending of the tongues around the wire. Figures 17 18 and 19 show the threelastmentioned steps in the method of forming the hinge. After passing through the machine, the completed hinge has the appearance shown in Figure 20, but is of indeterminate length and can be cut to any length or lengths desired.

By rotating the bodies of the sections alternately upwardly and downwardly, the fashioning of the tongues around the wire and also the eliminating of the raw edges upon the sections is facilitated as well as the binding action of the tongues is prevented.

With the above method, it will be readily seen that a completed hinge is formed from a flat metallic strip during its advancement, this advancement being in the present in stance continuous.

lVhat I claim as my invention is 1. The method of forming a hinge which comprises the severing of a strip during its advancement into a plurality of sections, and the fashioning of the sections during the advancement of the strip into hinge members.

2. The method of forming a hinge which comprises the severing of a strip during its advancement into a plurality of sections having longitudinally spaced tongues, and the subsequent fashioning of the tongues during the advancement of the strip into barrels to form the sections into hinge members.

3. The method of forming a hinge which comprises the severing of a strip during its advancement into a plurality of sections, and the fashioning of the sections around a wire during the advancement of the strip and the wire.

4. The method of forming a hinge which comprisesthe severing of a strip during its advancement into a plurality of sections having longitudinally spaced tongues, and the subsequent fashioning of the tongues around a wire during the advancement of the strip and wire to form cooperating hinge members pivotally connected to each other.

5. The method of forming a hinge which comprises the continuous advancing of a strip, and the successive steps of severing the strip into sections. and fashioning and pivotally connecting the sections to form cooperating hinge members.

6. The method of forming a hinge which comprises advancing a strip and during the advancement of the strip forming cooperat- 1 ing hinge members fromthe strip and pivotally connecting the hinge members.

7. The method of forming a hinge which comprises the shearing of an advancing metallic strip into a plurality of sections, and

the subsequent fashioning of the sections during the advancement of the strip to form hinge members thereof.

8. The method of forming a hinge which comprises the shearing of a metallic strip into a plurality of sections, and the simultaneous advancing and fashioning of the sections into hinge members.

9. The method of forming a hinge which comprises the advancing of a wire in predetermined relation to an advancing section having longitudinally spaced tongues, and the fashioning of the tongues around the Wire during the advancement of the wire and section.

10. The method of forming a hinge which comprises continuously advancing a strip, severing the strip into a pair of sections having alternate interengaging tongues, the lateral moving of the sectionstowardcach other during advancement of the sections to bring the same into overlapping relation, and the fashioning of the tongues into hinge barrels during the advancement of the sections.

11. The method of forming a hinge which comprises the severing of a strip into a pair of sections having alternate inter-engaging tongues extending longitudinally thereof, the deflecting of the outer ends of the tongues of one section outwardly beyond the plane of the body of the other section, the lateral moving of the sections toward each other to bring the same into overlapping relation, and the subsequent fashioning of the tongues into hinge barrels.

12. The method of forming a hinge which comprises the advancing of a flat metallic strip, the severing of the strip into a pair of sections having laterally interengaging tongues extending longitudinally thereof, the crimping of the tongues to deflect the outer ends of the tongues of one section beyond the plane of the body of the other section, the lateral moving the sections toward each other to bring the tongues of one section into overlapping relation With the body of the other section, the fashioning of the sections to bring their tongues into substantially parallel relation to their respective bodies, the advancing of a wire between the tongues of said sections and the subsequent fashioning of the tongues around the wire to form hinge barrels.

13. The method of forming a hinge which comprises the continuous advancement of a strip of indeterminate length, and the successive steps during the advancement of the strip, of severing the strip into sections, and subsequently fashioning the sections into hinge members.

14. The method of forming a hinge which comprises the continuous advancement of a flat metallic strip, the shearing of the strip into a pair of sections having alternate interengaging tongues extending longitudinally thereof, the continuous advancement of a wire into predetermined relation to the sections, and the subsequent fashioning of the tongues of the sections around the wire into hinge barrels during the continuous advancement of the strip and wire.

15. In the method of forming a hinge, the simultaneous advancing and fashioning of the interengaging tongues extending longitudinally of a pair of strips to form the tongues into hinge barrels.

v 16. In the method of forming a hinge, the advancing of a pair of sections having alternate interengaging tongues extending longitudinally thereof, and the pivotal connecting of the sections during their advancement.

17 In the method of forming a hinge, the continuous advancing of a pair of sections having alternate interengaging tongues extending longitudinally thereof, the advancing of a wire in predetermined relation to the tongues of the sections, and the subsequent fashioning of the tongues of the sections around the wire to form hinge barrels.

In testimony whereof I affix my signature.

H. G. KELLOGG. 

